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Atomic TheoryDS

Atomic Theory 1

Atom What all matter is made of
Proton Part of a nucleus that has a positive charge
Neutron Part of a nucleus that has no charge
Element When something is made out of only one atom
Electron Part of an atom involved in chemical reactions
Malleable Can be smashed without crumbling
Luster Shiny
Ductile Can be drawn in to a thin wire
Corrosive It can rust
Density The quantity of something per unit measure, especially per unit length, area, or volume
Noble Gases Any of the gaseous elements in group 18
Transitional Metals Any metallic element in groups 3-12
Halogens Any of the elements in group 17
Alkali Metals Any of the elements in group 1
Alkaline Earth Metals Any of the elements in group 2
Conservation of Mass Matter is never created or destroyed it just reorganizes itself
Compound Made from 2 different atoms that chemically combine
Molecule Atoms combined
Covalent Compound 2 Non-Metals
Ionic Compound Metal and a Non-Metal
Lewis Dot Structure Picture that shows how elements form compounds using valence electrons
Substance Matter that has the same fixed composition and properties
Heterogeneous Mixture A type of mixture where the substances are not mixed evenly
Homogeneous Mixture Two or more substances mixed together evenly on a molecule level but are still not bonded together
Solution Another name for Homogenous
Solute Substance that seems to dissolves or seems to disappear
Solvent The substance that dissolves the solute
Precipitate The result of solutions mixing and creating a chemical change making a solid
Physical Change In which the form or appearance of matter changes but not the composition
Vaporization A liquid changes into a gas
Condensation When a gas changes into a liquid
Sublimation When a solid turns into a gas
Deposition when a gas turns into a solid
Chemical Change Substances are changed into different different substances
Created by: dscarlata



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